Circuit-connector.



H. A. DOUGLA:S CIRCUIT coNNEcToII. APPLICATION FILED IIIII'II. 27", 191s.

Patented Mar. 20, 1917..

ign

IIIIW,

UNITED STATES; PATET OFFICE.

" l Patented Mar. 20, 1917.

.",fiilniebiueamrbhern-isis. seriamaseses.

spannenden of 'Letters ment'.

contact c arrier 2 of.y insulating material, this contact carrier .be ng centrally disposed when the shell is employed `and constructed to couple a lamp 3 and a plugI 4 or other contactcarriers, tho 1 h the invention is not to be limited to this orm of switch. lNhen constructedifor Ithis purpose theshell desirably hasbayonet-silo ts at each end, the bayoofioem -f whtht. Iy; Hulon?Y A. potions, t tinten ff ,liliniUnteii-Sthtoe r'esidm at B onson'jntkecounty of Branch and tete o VMieli have-invented a, certain new l" Improvement lin Circuit-Connectors, of which the followingis a full, `"'.C'1al, ldi'e, and 'exact description, refbeing lialdtthe accompan draw# net s lotsg at one end being adapted to re- `10".inl f f a part ofthis speci cation. ceive bayonet pins 6 upon .the contact carry- 65 "if, y invenionrelates= tocircuit closingr ing ortion orbaseifthelammthe lamp de- (s'witchegextenders-or connectors and'has tor sira 1y havingionl,Y one relative position l it`obect lthe provision ofimproved means with respect 'toethe :rhell whenI the lamp and hleliytw 'cmponent arts of the device Shell are coupled. VThe bayonet slots at the 'may linvetyo g'eletiyejgm)ustments while in other-- end ofthe shell are provided each with 70 .,gssinbl` one for j ztheecircuit and the 'two seats 7 and 8 4(constituting coupling...- othei'fffiirf-o ".t,.the' .lcircuit.., A. switch formations) u on-lt ie shell 1 that are sepaL medecin ecio ce wthm .invention is inrated longitudinali tof the shell whereby the cliliyeof ttio'contact carriers', a'shell withbayonet-:pins9 (a :io constituting cou ling inwhichone, of`thesejoontact carriers-is disV formations may be intervenga ed wit the ps'ed, this'slell and .the other contact cg,rshellV atdi erent ple ces lon itu inally therez i 'rief' lmvinj complementari couplingforinaoffer the' pur ose of ho din the plugxji f tionswhere this latte@y contact carrier may in assembly v vit the shell whi e the plug is- .y laced `in and outer ,position either in its'inner. (r outer positiomthe nr- 25 w e'coupled with the shell, the 'contacts Yrungementloeing suihthtwhen the plug is 4upon the carriers bein'g so positioned that in its innermostoiution it` w ill be included they are conected .'lien the contact carrier' -ln circuit and" w en itis 1u its outermost .hgying'eoup'ling en gagementwith the shell ositioncit -will` be excluded from circuit.

is-iiiits inner position 4and are -disconnected ile-the plugilliu trated merely servesii-s e i "owlien this contact' `carrieris in 4ite outer' posivcontacttermn'al .on rrier for the c :onducting-l tion, enabu'tme'nthavng a,.cu -shaped rf tioli', V`"thii-ifcarriei.* an Isurroun ing wires 10 and-'11. leerling'thereto from a suitable sourceo curre 1t,-tl ie -inventi'on'is not to L referencet0?- of' e t' f Iller sha1 t upon this carrier .that is comple-v mental yto[ t he contiguous contact upon the intermediate carrier, and aisplingmamtemof theabutxneiitagem'sttheen.

'contact carrier enga .by the' abutmentshowing tha; gein-:cd einliiimgtflthereo tieni` ig, E isa Vieyfshowingthe tubular section, theplug, and Vlump irrelevation, and a contact carrierwithilr the shell in section, t e glug and larnp. being in circiut;andFig. in its outcry-position to exclude the from ,circuitfthe shell, the contact carrier,

and the folloverbeing shown in section.

Trike lalts are indicated by similar charl ,efstrcture illustrated-is inclusive of a viewzinfelevatiom entering into the oonstruo versal movement'viith'in Va Vsuitlile ran be'limited-'to aplug that itemployed for this a purposel as the -ini ention contemplates the use of such eplug' as a contact lcarrier irre# 9 .ective .of the 'cm uit" portions with which e contactsnpon the plu -ixre connected An abutment -12 is outwa' by a coiled iarin ,13 th eouterendowhch is to t e cup-shapedabrtmentlgso as 9v5 :to be mechanically'coupledftlierewith'while the innemend `011th i .spp iiig ieee-'ved wie the annular-reces 'sl-4 pro'fi'ded therefor in- .the'contact cerrier lgtliecontct-carrier and l Y theinulend of the'l s ringbeingiilso cou-10.0 --pled together.- fTle 1% is a Iifiewshowing' the lplg 1 attach less than Ythe inxei diameter, of the shell 1 whereby.J s uch abui ment is capable of uui-l enable it properly fo perform its function.

Assuming that ihe lamp is-'iii :place the ultimate terminals thereof in'the device 4disclosed arethe-plu nger contactfl substanmelia-11i() I Iielosing an tllally ggg-3mal wijn abutment 12 and 110, .f.

the metallic shell 1, the lamp-- filament ter mina'ls 16, 17 upon .the base of the lamp being respectivelyin electrical connection. with the shell 1- and contact 15,' the contact 15 bein electrically connected with the contact 18 t at enga es the contact 17 when the lamp is in pace. A spring 19'presses the contacts 15 andv 18 apart and enables the lcontact; 18 to hold lthe bayonetv pins 6 in place within the lbayonet. slots 5. The contacts and 18nthat are carried bythe contact carrier-'2 aresubstantiallyco-axial with the shell 1'.

contact 15 and bears upon the element12 that also surrounds'said contact andl the contact- 20 to engage directly the carrier of the latter contact. 'The contact 15, however,

' has to be separated from the contact 20 `upon the plug 4 when the lamp or any other circuit portion connected with the contact l5 is to be excluded from circuit. The ring 12 constitutes a followin abutment since the spring 13 is suiiicient y long'v to enable'. the ring 12 to hold the plug 4 with the-bayotitpins 9 in either airs of seats 7 or 8.

'when these bayonet plus 9 are in the seats 8 the plug 4 and shell 1 are still in mechani- -cal assembly Jbutthe. circuit connection 1s broken since thecontact 1 5-ha's a limit -of outward' movement that permits this contact to follow the lug 4 in the movement of the latter fromtrhe seats 7 to the seatsf for a very short-'distanceand to cease following before the pins 9 reach the seats 8 whereby the contact carriers 2 and 4 are' maintained in "mechanical assembly'A while electrically separate, whenv the carrier f4. is in'its outer osition and are bothrnechanically and e ectrically assembledwheri the -carrier 4 is inv itsl inner position' since the carrier 4 has a metallic sheath 21 -that is electrically in contact with ,the 4metallic shell` 1. The switch illustrated is aslngle pole connectorin which the contact 4 lisincllided in circuit by way of vanothlrl contact 18 symmetrically positioned wi respect jto "the contact 15 but it is to be understood that thev inventionisnot to be limited to single pole connectors nor to the manner in which t the contacts' carried by the contact: carrier larger than the body of the. cup, the reduce 2 are includedincircuit at the `end of the shell 1 opposite to .that where the plug 4 is received. The floatingvfollower 12 is desirably cup-shaped, the riin of -the cup bein i Thecoiled spring 13 is also. .co-axial with the shelland surrounds the portion of the cup being surrounded the spring 13. By" means of the vuniversal mounting for the' 'f ollower 12 this follower will have universal engagement with the insulating portionof the plu 4 and will not war or tilt the plug. e Ifollower,A by having ample clearance surroundingrit and between it and the shell and becauseh-the manner of'its mounting, will not'bind as it moves longitudinally of the shell .but will be free to move universally about within' the shell to a sufiicient extent in order that it may rest `flat upon theplug at yall times and A b vfree of binding engagement, with the Shell 1.

While Ifhave herein shown Iparticuzlai-'ly .described the preferred embodiment ofmy invention I donot wish tobe limited to the precise detailsof construction shownj as changes may. readily be -ni'ade' without Jp'arting from `the spirit of my invention .ctt having thus described my'inventinl 'claim as newand dcsi'ref to secure 'by'Letters Patent the following .v l -3 A switch includin a' shell havin *bayonet slots at vthe .en thereof, lthe ayonet slot at one end having4 two'ba'yonet pin en t gaging'seats spaced apart lonlgitudil'iall of 86 1 the shell; contact Carriers at t e ends jo the shell and having r ayon'etpins'V euga'ge'nble with the seatsl in thebayonet. slots; an' 1n-4 termediatejcontactcari'ier within theshellv j and', carrying contacts upon'the ends thereof 90 c'ontactcarriers,v the. contact whichfare e thevaforesai l element upon the end of the intermediate able with the .contacts upoh contact carrier-,that is adjacent that end 'of thfshu WhOS'f baymet 5101? ...hast WOLF-.93158 bein `Vsubstantially co-alial with the shell;V

an-a utment surroundin :the lattercontact and havng'a cup-sha-p rti'on e aginA thecarr-i'er at the latter en ofthe siigll an ous 'conand 'a against the end contact carrier by the abutment.

' Iii-witness whereof I hereunto subscribe ity o fMamh ,A2.- 11

my llame this 16th .\Viti1esses: 'ARTHUR D. LINDsnr; WILL M. Fos'TERI u tment I' HARRY a. DOUGLAS; I

,surrounding the' contact. upon thiscarrier that is complemental to theconti tact upon; theintermediate 4carrier v spri ng maintaining pressure of the ab 

